Outgoing Connections

Some systems allow you to configure how long a system waits for an outgoing
connection to be established. When set too high, establishing outgoing connections
to destination servers such as replicas not responding quickly can cause long
delays. For Intranet deployments on fast, reliable networks, you can set this
parameter to a value of 10 seconds to improve performance. Do not, however,
use such a low value on networks with slow, unreliable, or WAN connections,
however.

On Solaris systems, this time interval is configured through the tcp_ip_abort_cinterval parameter.